[Sync] Remove special cased sessions default commit

components/sync/engine_impl/cycle/nudge_tracker_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/sync/engine_impl/cycle/nudge_tracker.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 727 matching lines @@
             nudge_tracker_.RecordLocalChange(ModelTypeSet(PREFERENCES)));
 
   // Typed URLs has a default delay.
   EXPECT_EQ(nudge_tracker_.RecordLocalChange(ModelTypeSet(TYPED_URLS)),
             base::TimeDelta());
 
   // "Slow nudge" delays are longer than the default.
   EXPECT_GT(nudge_tracker_.RecordLocalChange(ModelTypeSet(BOOKMARKS)),
             base::TimeDelta());
 
-  // Sessions is longer than "slow nudge".
-  EXPECT_GT(nudge_tracker_.RecordLocalChange(ModelTypeSet(SESSIONS)),
+  // Sessions has a "slow nudge".
+  EXPECT_EQ(nudge_tracker_.RecordLocalChange(ModelTypeSet(SESSIONS)),
             nudge_tracker_.RecordLocalChange(ModelTypeSet(BOOKMARKS)));
 
   // Favicons have the same delay as sessions.
   EXPECT_EQ(nudge_tracker_.RecordLocalChange(ModelTypeSet(SESSIONS)),
             nudge_tracker_.RecordLocalChange(ModelTypeSet(FAVICON_TRACKING)));
 
   // Autofill has the longer delay of all.
   EXPECT_GT(nudge_tracker_.RecordLocalChange(ModelTypeSet(AUTOFILL)),
             nudge_tracker_.RecordLocalChange(ModelTypeSet(SESSIONS)));
 
@@ skipping 198 matching lines @@
   EXPECT_TRUE(IsInvalidationAcknowledged(inv1_id));
   EXPECT_TRUE(IsInvalidationAcknowledged(inv2_id));
   EXPECT_TRUE(IsInvalidationAcknowledged(inv3_id));
   EXPECT_TRUE(IsInvalidationAcknowledged(inv4_id));
   EXPECT_TRUE(IsInvalidationAcknowledged(inv5_id));
 
   EXPECT_TRUE(AllInvalidationsAccountedFor());
 }
 
 }  // namespace syncer